Managed XDR

banned-20251027t182751-28170-13 (QuasarRat, XWorm) — malware analysis report

File info

Filename
banned-20251027t182751-28170-13
File type
SMTP mail, ASCII text
File size
610.7 KB
First seen
Last seen

Environment

w10/x86 en

Hashes

SHA1
291eef1fa52fe9e7917752722bf22b59b1a2a8f2
SHA256
6cd6d9d77832f1f8055d7505f87d2a989536295a9336e9052fee3717d479aaff
MD5
71d6f3d40b6f170cde8e2af585f18953

Malwares

  • QuasarRat
  • XWorm

Signatures

Execution

T1059.001 suspicious_powershell: Creates suspicious powershell process
T1204 office_dotnet_load: Microsoft Office loads .NET assembly or DLL files (indicator of suspicious MS Office activity)
T1204.002 office_com_load: Microsoft Office loads COM DLL files (indicator of COM usage in macros)

Persistence

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup

Privilege Escalation

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1055 injection_failed: The attempt to inject into a process has failed

Defense Evasion

T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1564.004 removes_zoneid_ads: Attempts to hide the indications that the file was downloaded from the Internet
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1497.003 antisandbox_sleep_utilities: Uses Windows utilities for pausing the execution
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1055 injection_failed: The attempt to inject into a process has failed
T1070 stealth_window: A process created a hidden window

Credential Access

T1003.001 dumps_lsass: Dumps lsass.exe process (probably, to extract credentials)

Discovery

T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1497.003 antisandbox_sleep_utilities: Uses Windows utilities for pausing the execution
T1057 pidbruteforce: Enumerates processes using PID Bruteforce
T1518 locates_browser: Attempts to identify where browsers are installed
T1016.001 system_network_configuration_discovery: System network configuration discovery detected

Command and Control

T1071.001 network_cnc_http: Suspicious HTTP traffic
T1071.001 network_http: Performs HTTP requests

Other

yara_rules: Static rules
executes_dropped_exe: Executes dropped exe files
ce_info: XWorm Configuration Data found
creates_exe: Creates executable files in the file system
created_exe_is_similar_to_system_one: Сreated exe is similar to system one
page_noaccess: Disables access to a memory region
network_powershell: Powershell process network connection detected
no_graphical_activity: No graphic activity
dotnet_suspicious_resources_names: Dotnet program has suspicious resources names
dotnet_suspicious_module_name: Dotnet program has suspicious module name
creates_suspended_process: Creates suspended process
dotnet_obfuscated: Dotnet program is potentially obfuscated
creates_in_programdata: Creates files in the ProgramData directory
test_check_service: Starts services
writes_data: Writes big amount of data to disk
open_winlogon_process: Trying to open winlogon process
dotnet_suspicious_entrypoint: Dotnet program has suspicious entrypoint
suricata_alert: Malicious traffic detected

Related reports

Managed XDR